Page 47 of 137 FirstFirst ... 7172737444546474849505767778797 ... LastLast
Results 737 to 752 of 2179

Thread: AMD - Zen chitchat

  1. #737
    Senior Member watercooled's Avatar
    Join Date
    Jan 2009
    Posts
    11,478
    Thanks
    1,541
    Thanked
    1,029 times in 872 posts

    Re: AMD - Zen chitchat

    I wonder how much of that bugginess is down to the vanilla drivers, and how much of it is down to the presumably custom HP implementation? I only ask because TechReport never mentioned any such crashes or bugs in their review.

    Also I'm not sure I understand their reference to desktop Ryzen's FMA bug and compare it to the laptop crashing in Furmark - a GPU benchmark? CPUs have erratum, whether that's Intel, AMD or anyone else, and it's not usually a big deal.

    I don't disagree that AMD's drivers often need more polish, but when you're comparing against Intel's GPU drivers? Yeah... no...

    IIRC Intel's drivers are the only ones that have caused me BSODs across multiple versions and rollbacks. You really can't knock AMD's driver stability when comparing to Intel.

  2. #738
    Senior Member Xlucine's Avatar
    Join Date
    May 2014
    Posts
    2,162
    Thanks
    298
    Thanked
    188 times in 147 posts
    • Xlucine's system
      • Motherboard:
      • Asus prime B650M-A II
      • CPU:
      • 7900
      • Memory:
      • 32GB @ 4.8 Gt/s (don't want to wait for memory training)
      • Storage:
      • Crucial P5+ 2TB (boot), Crucial P5 1TB, Crucial MX500 1TB, Crucial MX100 512GB
      • Graphics card(s):
      • Asus Dual 4070 w/ shroud mod
      • PSU:
      • Fractal Design ION+ 560P
      • Case:
      • Silverstone TJ08-E
      • Operating System:
      • W10 pro
      • Monitor(s):
      • Viewsonic vx3211-2k-mhd, Dell P2414H
      • Internet:
      • Gigabit symmetrical

    Re: AMD - Zen chitchat

    Raven ridge has a spare graphics CU? I do like the whole naming GPU's after their compute blocks thing, it's really clear with the relative rankings

  3. #739
    Moosing about! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Not here
    Posts
    32,042
    Thanks
    3,909
    Thanked
    5,213 times in 4,005 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: AMD - Zen chitchat

    Quote Originally Posted by watercooled View Post
    I wonder how much of that bugginess is down to the vanilla drivers, and how much of it is down to the presumably custom HP implementation? I only ask because TechReport never mentioned any such crashes or bugs in their review.

    Also I'm not sure I understand their reference to desktop Ryzen's FMA bug and compare it to the laptop crashing in Furmark - a GPU benchmark? CPUs have erratum, whether that's Intel, AMD or anyone else, and it's not usually a big deal.

    I don't disagree that AMD's drivers often need more polish, but when you're comparing against Intel's GPU drivers? Yeah... no...

    IIRC Intel's drivers are the only ones that have caused me BSODs across multiple versions and rollbacks. You really can't knock AMD's driver stability when comparing to Intel.
    Well as you might realise many of these reviewers seem to conveniently ignore the Intel crappy IGP drivers,so it does make me wonder whether how much of this is down to review sites being worried Intel won't supply them with review laptops - even TR got their own Intel laptops from Intel. They all seem to be trying to push it towards systems with Nvidia dGPUs.

    As SJ mentioned earlier,maybe AMD really needs to start seeding units with the equivalent Intel and AMD X360 laptops to reviewers.

  4. #740
    Moosing about! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Not here
    Posts
    32,042
    Thanks
    3,909
    Thanked
    5,213 times in 4,005 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: AMD - Zen chitchat

    AMD apparently working on using GDDR6 for its graphics cards:

    https://translate.google.co.uk/trans...cherinterfaces

  5. #741
    Registered+
    Join Date
    Aug 2017
    Posts
    23
    Thanks
    0
    Thanked
    3 times in 3 posts

    Re: AMD - Zen chitchat

    HBM didn't seem to work out for them so well, even when it seems like a great technology.

  6. #742
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    13,010
    Thanks
    781
    Thanked
    1,568 times in 1,325 posts
    • DanceswithUnix's system
      • Motherboard:
      • Asus X470-PRO
      • CPU:
      • 5900X
      • Memory:
      • 32GB 3200MHz ECC
      • Storage:
      • 2TB Linux, 2TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 39 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Iiyama 27" 1440p
      • Internet:
      • Zen 900Mb/900Mb (CityFibre FttP)

    Re: AMD - Zen chitchat

    Quote Originally Posted by cascadde View Post
    HBM didn't seem to work out for them so well, even when it seems like a great technology.
    HBM is still a high end technology, mid range cards didn't need it and with GDDR6 still won't for some time.

  7. #743
    Senior Member
    Join Date
    Mar 2005
    Posts
    4,945
    Thanks
    171
    Thanked
    388 times in 315 posts
    • badass's system
      • Motherboard:
      • ASUS P8Z77-m pro
      • CPU:
      • Core i5 3570K
      • Memory:
      • 32GB
      • Storage:
      • 1TB Samsung 850 EVO, 2TB WD Green
      • Graphics card(s):
      • Radeon RX 580
      • PSU:
      • Corsair HX520W
      • Case:
      • Silverstone SG02-F
      • Operating System:
      • Windows 10 X64
      • Monitor(s):
      • Del U2311, LG226WTQ
      • Internet:
      • 80/20 FTTC

    Re: AMD - Zen chitchat

    Quote Originally Posted by DanceswithUnix View Post
    HBM is still a high end technology, mid range cards didn't need it and with GDDR6 still won't for some time.
    Exactly. It looks like Vega is actually held beck by its bandwidth to the HBM due to AMD only using 2 packages with half the pins of Fury (and less than double the bandwidth/pin. Nvidias high end uses double the number of packages on something that costs an order of magnitude more.
    "In a perfect world... spammers would get caught, go to jail, and share a cell with many men who have enlarged their penises, taken Viagra and are looking for a new relationship."

  8. #744
    Not a good person scaryjim's Avatar
    Join Date
    Jan 2009
    Location
    Gateshead
    Posts
    15,196
    Thanks
    1,232
    Thanked
    2,290 times in 1,873 posts
    • scaryjim's system
      • Motherboard:
      • Dell Inspiron
      • CPU:
      • Core i5 8250U
      • Memory:
      • 2x 4GB DDR4 2666
      • Storage:
      • 128GB M.2 SSD + 1TB HDD
      • Graphics card(s):
      • Radeon R5 230
      • PSU:
      • Battery/Dell brick
      • Case:
      • Dell Inspiron 5570
      • Operating System:
      • Windows 10
      • Monitor(s):
      • 15" 1080p laptop panel

    Re: AMD - Zen chitchat

    Quote Originally Posted by badass View Post
    ... less than double the bandwidth/pin. ...
    I suspect that's the bit that's hurting them. All the build up was about HBM2 doubling data rates, and I imagine they decided early that at 2Gbps they could get away with only 2 stacks to keep costs down. Why they've ended up stuck at 1.6Gbps I don't know, but that's sucked 20% of their projected bandwidth away ... that's got to hurt performance...

  9. #745
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    13,010
    Thanks
    781
    Thanked
    1,568 times in 1,325 posts
    • DanceswithUnix's system
      • Motherboard:
      • Asus X470-PRO
      • CPU:
      • 5900X
      • Memory:
      • 32GB 3200MHz ECC
      • Storage:
      • 2TB Linux, 2TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 39 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Iiyama 27" 1440p
      • Internet:
      • Zen 900Mb/900Mb (CityFibre FttP)

    Re: AMD - Zen chitchat

    Quote Originally Posted by badass View Post
    Exactly. It looks like Vega is actually held beck by its bandwidth to the HBM due to AMD only using 2 packages with half the pins of Fury (and less than double the bandwidth/pin. Nvidias high end uses double the number of packages on something that costs an order of magnitude more.
    How is Vega held back by HBM? The Vega 56 and 64 have the same memory bandwidth and yet the 56 is slower so at the very least the 56 isn't bandwidth limited. They also have the same bandwidth as a 1080ti. Frankly I think Vega just needs more shaders on a bigger chip, but wonder if AMD have a design limit that holds them down to 4096 as that is what both Vega and Fury had.

  10. #746
    Not a good person scaryjim's Avatar
    Join Date
    Jan 2009
    Location
    Gateshead
    Posts
    15,196
    Thanks
    1,232
    Thanked
    2,290 times in 1,873 posts
    • scaryjim's system
      • Motherboard:
      • Dell Inspiron
      • CPU:
      • Core i5 8250U
      • Memory:
      • 2x 4GB DDR4 2666
      • Storage:
      • 128GB M.2 SSD + 1TB HDD
      • Graphics card(s):
      • Radeon R5 230
      • PSU:
      • Battery/Dell brick
      • Case:
      • Dell Inspiron 5570
      • Operating System:
      • Windows 10
      • Monitor(s):
      • 15" 1080p laptop panel

    Re: AMD - Zen chitchat

    Quote Originally Posted by DanceswithUnix View Post
    How is Vega held back by HBM? The Vega 56 and 64 have the same memory bandwidth and yet the 56 is slower so at the very least the 56 isn't bandwidth limited. ....
    Vega 64 stock memory clock is almost 20% higher than Vega 56. Bandwidth is 484GB/s vs 410GB/s.

    Memory overclocking gains on Vega 56 aren't huge, but they are there. Gamersnexus saw gains of 3.6% from overclocking just the memory* - but that's compared to a memory overclock of ~ 19%. I haven't found a review of Vega 64 with a memory-only overclock yet, but AFAICT it doesn't go much beyond 1000MHz, so gains are going to be minimal anyway with Vega 64 already running the memory at 945MHz stock...


    * Their testing didn't actually cover *just* a memory overclock: they first upped the power target by 50%, which yielded a 12.6% performance increase, then upped the memory from 800MHz to 950MHz, which gave them a further 3.6%.

  11. Received thanks from:

    DanceswithUnix (05-12-2017)

  12. #747
    Senior Member Xlucine's Avatar
    Join Date
    May 2014
    Posts
    2,162
    Thanks
    298
    Thanked
    188 times in 147 posts
    • Xlucine's system
      • Motherboard:
      • Asus prime B650M-A II
      • CPU:
      • 7900
      • Memory:
      • 32GB @ 4.8 Gt/s (don't want to wait for memory training)
      • Storage:
      • Crucial P5+ 2TB (boot), Crucial P5 1TB, Crucial MX500 1TB, Crucial MX100 512GB
      • Graphics card(s):
      • Asus Dual 4070 w/ shroud mod
      • PSU:
      • Fractal Design ION+ 560P
      • Case:
      • Silverstone TJ08-E
      • Operating System:
      • W10 pro
      • Monitor(s):
      • Viewsonic vx3211-2k-mhd, Dell P2414H
      • Internet:
      • Gigabit symmetrical

    Re: AMD - Zen chitchat

    Quote Originally Posted by DanceswithUnix View Post
    Frankly I think Vega just needs more shaders on a bigger chip, but wonder if AMD have a design limit that holds them down to 4096 as that is what both Vega and Fury had.
    Fury was a special case, when they had a completely understood process so they could run the die right up to the reticle size. The engineers were probably feeling really chuffed about getting the performance gains that they did without pushing up the compute units - vega is already a big chip, they don't need it to be more expensive to produce

  13. #748
    Moosing about! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Not here
    Posts
    32,042
    Thanks
    3,909
    Thanked
    5,213 times in 4,005 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: AMD - Zen chitchat

    Finally a review site tested both AMD and Intel versions of the HP Envy X360:

    https://www.laptopmag.com/reviews/la...-envy-x360-15t

    Battery Life

    You'll need to carry the Envy notebooks' power cords wherever you go, as they fail to meet the already-low standards for big-screen notebook battery life. The Laptop Mag Battery Test (web surfing at 100 nits) drained the Intel model of its charge in 5 hours and 49 minutes, while the AMD model hit empty after 5 hours and 11 minutes. Those times aren't just shorter than the 6:34 mainstream notebook average, but below the 6:14 from the Inspiron 15, the 8:41 from the Spectre x360 and the 8:59 from the Yoga 720.

  14. #749
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    13,010
    Thanks
    781
    Thanked
    1,568 times in 1,325 posts
    • DanceswithUnix's system
      • Motherboard:
      • Asus X470-PRO
      • CPU:
      • 5900X
      • Memory:
      • 32GB 3200MHz ECC
      • Storage:
      • 2TB Linux, 2TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 39 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Iiyama 27" 1440p
      • Internet:
      • Zen 900Mb/900Mb (CityFibre FttP)

    Re: AMD - Zen chitchat

    Quote Originally Posted by scaryjim View Post
    Vega 64 stock memory clock is almost 20% higher than Vega 56. Bandwidth is 484GB/s vs 410GB/s.
    I did fact check that before posting, but guess I checked with a duff review

    Overclocking the ram improves the latency as well as the bandwidth, so I would always expect some performance improvements. But an 18% overclock yielding a 3.6% performance increase isn't selling me on there being a memory access wall.

    Quote Originally Posted by Xlucine View Post
    Fury was a special case, when they had a completely understood process so they could run the die right up to the reticle size. The engineers were probably feeling really chuffed about getting the performance gains that they did without pushing up the compute units - vega is already a big chip, they don't need it to be more expensive to produce
    I guess I'm used to seeing 560mm^2 Titan chips at 28nm and the P100 at 610mm^2, but you are right AMD are just under performing per square mm if you compare with the 1080ti.

  15. #750
    Not a good person scaryjim's Avatar
    Join Date
    Jan 2009
    Location
    Gateshead
    Posts
    15,196
    Thanks
    1,232
    Thanked
    2,290 times in 1,873 posts
    • scaryjim's system
      • Motherboard:
      • Dell Inspiron
      • CPU:
      • Core i5 8250U
      • Memory:
      • 2x 4GB DDR4 2666
      • Storage:
      • 128GB M.2 SSD + 1TB HDD
      • Graphics card(s):
      • Radeon R5 230
      • PSU:
      • Battery/Dell brick
      • Case:
      • Dell Inspiron 5570
      • Operating System:
      • Windows 10
      • Monitor(s):
      • 15" 1080p laptop panel

    Re: AMD - Zen chitchat

    Quote Originally Posted by DanceswithUnix View Post
    ... Overclocking the ram improves the latency as well as the bandwidth, so I would always expect some performance improvements. But an 18% overclock yielding a 3.6% performance increase isn't selling me on there being a memory access wall. ...
    Good point on the latency, hadn't considered that They're certainly not up against a memory wall - and in itself that's quite impressive given they've got less bandwidth than Fury X had but significantly higher performance. Not sure if that's down to improved compression techniques or if Fury X was just giving bandwidth away for Christmas!

  16. #751
    Moosing about! CAT-THE-FIFTH's Avatar
    Join Date
    Aug 2006
    Location
    Not here
    Posts
    32,042
    Thanks
    3,909
    Thanked
    5,213 times in 4,005 posts
    • CAT-THE-FIFTH's system
      • Motherboard:
      • Less E-PEEN
      • CPU:
      • Massive E-PEEN
      • Memory:
      • RGB E-PEEN
      • Storage:
      • Not in any order
      • Graphics card(s):
      • EVEN BIGGER E-PEEN
      • PSU:
      • OVERSIZED
      • Case:
      • UNDERSIZED
      • Operating System:
      • DOS 6.22
      • Monitor(s):
      • NOT USUALLY ON....WHEN I POST
      • Internet:
      • FUNCTIONAL

    Re: AMD - Zen chitchat

    Quote Originally Posted by DanceswithUnix View Post
    I did fact check that before posting, but guess I checked with a duff review

    Overclocking the ram improves the latency as well as the bandwidth, so I would always expect some performance improvements. But an 18% overclock yielding a 3.6% performance increase isn't selling me on there being a memory access wall.



    I guess I'm used to seeing 560mm^2 Titan chips at 28nm and the P100 at 610mm^2, but you are right AMD are just under performing per square mm if you compare with the 1080ti.
    For the last couple of years Nvidia has gone to distinct lines for compute and gaming -AMD hasn't and they also don't build the largest GPUs too.

    Compare Vega to the GP102 at something like deep learning or other compute operations for example.

    The lower gaming performance is because AMD is doing a one size fits all strategy. If they want to catch Nvidia in performance per mm2 in gaming they really need to move to dedicated gaming GPUs.

  17. #752
    root Member DanceswithUnix's Avatar
    Join Date
    Jan 2006
    Location
    In the middle of a core dump
    Posts
    13,010
    Thanks
    781
    Thanked
    1,568 times in 1,325 posts
    • DanceswithUnix's system
      • Motherboard:
      • Asus X470-PRO
      • CPU:
      • 5900X
      • Memory:
      • 32GB 3200MHz ECC
      • Storage:
      • 2TB Linux, 2TB Games (Win 10)
      • Graphics card(s):
      • Asus Strix RX Vega 56
      • PSU:
      • 650W Corsair TX
      • Case:
      • Antec 300
      • Operating System:
      • Fedora 39 + Win 10 Pro 64 (yuk)
      • Monitor(s):
      • Benq XL2730Z 1440p + Iiyama 27" 1440p
      • Internet:
      • Zen 900Mb/900Mb (CityFibre FttP)

    Re: AMD - Zen chitchat

    Quote Originally Posted by scaryjim View Post
    Good point on the latency, hadn't considered that They're certainly not up against a memory wall - and in itself that's quite impressive given they've got less bandwidth than Fury X had but significantly higher performance. Not sure if that's down to improved compression techniques or if Fury X was just giving bandwidth away for Christmas!
    Caching for the wide slow pipe that is HBM must be, well, interesting so I presume they will have built lessons learnt from Fury into the cache of Vega.

    Quote Originally Posted by CAT-THE-FIFTH View Post
    For the last couple of years Nvidia has gone to distinct lines for compute and gaming -AMD hasn't and they also don't build the largest GPUs too.

    Compare Vega to the GP102 at something like deep learning or other compute operations for example.

    The lower gaming performance is because AMD is doing a one size fits all strategy. If they want to catch Nvidia in performance per mm2 in gaming they really need to move to dedicated gaming GPUs.
    Last couple of years? The GTX460 is some time back now, doesn't time fly!
    Still, the 1080ti is a reworked Titan, not a consumer part, and whilst you can find compute tasks where the Vega is faster it generally loses.

    https://www.anandtech.com/bench/product/1937?vs=1939

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (0 members and 2 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •